Chris A Posted June 3, 2023 Report Share Posted June 3, 2023 Just a thought in passing really. On my 13/60 the air intake that is on the filter housing stops short of the radiator so, logically, it breaths in hot air rather than air at the ambient temperature from outside the engine bay. Since an engine should perform better with cool air wouldn't it be an inprovement if the air intake was ahead of the radiator instead? Maybe there wouldn't be an improvement or maybe the bean counters won over the engineers. Any thoughts? Just to try it out I've borrowed one of the hot air pipes from the heating system and put it over the intake pipe so it passes in front of the radiator and will see if I notice and difference, for the better or worse. To be honest I doubt it. Link to comment Share on other sites More sharing options...
GrahamB Posted June 3, 2023 Report Share Posted June 3, 2023 Run with the extension pipe in the summer and without in the winter? Link to comment Share on other sites More sharing options...
Chris A Posted June 3, 2023 Author Report Share Posted June 3, 2023 1 minute ago, GrahamB said: Run with the extension pipe in the summer and without in the winter? I don't do winters 🥶 Link to comment Share on other sites More sharing options...
Peter Truman Posted June 3, 2023 Report Share Posted June 3, 2023 If I remember one car maker in their glove box manual advised to change the position of the air filter intake by rotating it summer and winter forwards summer sideways winter. What should we here where our winters are more like your summers and the summers are very hot? Link to comment Share on other sites More sharing options...
68vitesse Posted June 4, 2023 Report Share Posted June 4, 2023 The Mk1 2L Vitesse air box just had short stub pipes, the same design of air box on the Mk2 had extension pipes to alongside the radiator. Why?. Regards Paul Link to comment Share on other sites More sharing options...
dougbgt6 Posted June 4, 2023 Report Share Posted June 4, 2023 (edited) On my GT6 the pipes go into the radiator cowl in front of the radiator. When I first had it (in 1978) there was a bracket for the pipes on the front cross member also in front of the radiator. I'm with Chris, come November lock up the garage and house, no winters for me! Doug Edited June 4, 2023 by dougbgt6 Link to comment Share on other sites More sharing options...
Colin Lindsay Posted June 4, 2023 Report Share Posted June 4, 2023 1 hour ago, dougbgt6 said: I'm with Chris, come November lock up the garage and house, no winters for me! Doug Nothing like driving along on a Winter's day in a convertible... with a fur hat on of course. Having said that, 3am is a bit extreme... found that out once, the hard way. 1 Link to comment Share on other sites More sharing options...
Peter Truman Posted June 4, 2023 Report Share Posted June 4, 2023 When I lived in England in the 60’s and had convertibles Sprite and last a Herald CV I lived on the York Moors and driving home late at night in the cold with the roof down heater on full blast was absolutely fantastic! Try it in a snow storm drive fast and the snow blows over the cab space even better no traffic lights to stop at and get wet and straight into the stables, only time I got wet was shutting the stable doors and running across the Court yard Link to comment Share on other sites More sharing options...
DerekS Posted June 4, 2023 Report Share Posted June 4, 2023 Back in the 1970s I had a Ford Escort 1300 GT, the air cleaner had an intake that you positioned over the exhaust manifold in winter and rotated away for summer driving. Hot Car magazine were doing tests on cars to see if they could improve the BHP for no spend. With the Escort they removed the rotating section of the air cleaner but, critically, left the round rubber connector in place for air flow. They also removed the radiator fan and, combined, gained a 5 BHP increase which was noticeable on a 75 BHP engine. There was only one occasion where the engine started to get too warm, on a particularly hot day in traffic. Wish I still had the Escort... Derek. Link to comment Share on other sites More sharing options...
Chris A Posted June 4, 2023 Author Report Share Posted June 4, 2023 Well, I have put my 'performance improvement' to the test today as I went to a small local event and i can say without fear of contridiction - it didn't make the car run worse. Can't say I noticed any improvement either but considering the heat under the bonnet after the run out it ought to have sucked in much cooler air. I actually saw a real 'Unicorn' for the first time, actually a 1948 Licorne and very nice it was as well Link to comment Share on other sites More sharing options...
cliff.b Posted June 4, 2023 Report Share Posted June 4, 2023 1 hour ago, Chris A said: Well, I have put my 'performance improvement' to the test today as I went to a small local event and i can say without fear of contridiction - it didn't make the car run worse. Can't say I noticed any improvement either but considering the heat under the bonnet after the run out it ought to have sucked in much cooler air. I actually saw a real 'Unicorn' for the first time, actually a 1948 Licorne and very nice it was as well Might be interesting to see if it has had any effect on your mixture. In theory it could make it run weaker if the air is denser. If so, and you richened it again then maybe that could have a noticeable effect🤔 Or maybe not lol Link to comment Share on other sites More sharing options...
68vitesse Posted June 4, 2023 Report Share Posted June 4, 2023 Nice bright winter's day out in the Vitesse, very nice with appropriate clothing, no such thing as the wrong weather only the wrong clothes. Regards Paul. 1 Link to comment Share on other sites More sharing options...
johny Posted June 4, 2023 Report Share Posted June 4, 2023 Hmmm and the wrong car😂 2 Link to comment Share on other sites More sharing options...
Jeffds1360 Posted June 4, 2023 Report Share Posted June 4, 2023 1 hour ago, 68vitesse said: Nice bright winter's day out in the Vitesse Regards Paul. Ummm...it is Summer !! Link to comment Share on other sites More sharing options...
68vitesse Posted June 4, 2023 Report Share Posted June 4, 2023 20 minutes ago, johny said: Hmmm and the wrong car😂 Do you mean a non Triumph?. Regards Paul 1 Link to comment Share on other sites More sharing options...
68vitesse Posted June 4, 2023 Report Share Posted June 4, 2023 17 minutes ago, Jeffds1360 said: Ummm...it is Summer !! Do you call this a summer? we had proper summers when I was young. Regards Paul Link to comment Share on other sites More sharing options...
Chris A Posted June 4, 2023 Author Report Share Posted June 4, 2023 2 hours ago, cliff.b said: Might be interesting to see if it has had any effect on your mixture. In theory it could make it run weaker if the air is denser. If so, and you richened it again then maybe that could have a noticeable effect🤔 Or maybe not lol But - When did I set the mixture? If I set it when the air temperature was low it would mean the mixture was wrong when running the car in summer. Or as you say maybe not. I clearly don't have enough to do 😀 Link to comment Share on other sites More sharing options...
Colin Lindsay Posted June 4, 2023 Report Share Posted June 4, 2023 1 hour ago, 68vitesse said: Do you call this a summer? we had proper summers when I was young. Regards Paul Well if the doomsayers are going to be believed we'll have them again. Link to comment Share on other sites More sharing options...
cliff.b Posted June 4, 2023 Report Share Posted June 4, 2023 1 hour ago, Chris A said: But - When did I set the mixture? If I set it when the air temperature was low it would mean the mixture was wrong when running the car in summer. Or as you say maybe not. I clearly don't have enough to do 😀 Indeed. I set mine last summer when temp was about 30C and later in the Autumn when it was about 10C I checked again and it was running very weak. Link to comment Share on other sites More sharing options...
GrahamB Posted June 5, 2023 Report Share Posted June 5, 2023 12 hours ago, cliff.b said: I set mine last summer when temp was about 30C and later in the Autumn when it was about 10C I checked again and it was running very weak. What you need are Waxstat jets for SUs !!😄 Link to comment Share on other sites More sharing options...
cliff.b Posted June 5, 2023 Report Share Posted June 5, 2023 11 hours ago, GrahamB said: What you need are Waxstat jets for SUs !!😄 I have got waxstat jets, but, without any wax in them. Replaced with pennies lol Link to comment Share on other sites More sharing options...
Gary Flinn Posted June 6, 2023 Report Share Posted June 6, 2023 On 04/06/2023 at 09:07, 68vitesse said: The Mk1 2L Vitesse air box just had short stub pipes, the same design of air box on the Mk2 had extension pipes to alongside the radiator. Why?. Regards Paul The Triumph Design Engineers must have found a cold air supply into the Engine gives a slight increase in power? It is a known fact that on a cold wet day, engines will run better with the cold damp air being mixed with the Fuel. Gary Link to comment Share on other sites More sharing options...
Chris A Posted June 6, 2023 Author Report Share Posted June 6, 2023 And better the closer you are to sea level. In my case I am at 80 something metres at home but when out and about in the 'Alpes Mancelles' or 'Suisse Normande' I do get to higher altitudes 😁 although I can't say the lack of oxygen bothers me or the car . . . Link to comment Share on other sites More sharing options...
Peter Truman Posted June 6, 2023 Report Share Posted June 6, 2023 Driving across the York Moors on a foggy misty night the car always ran great 1 Link to comment Share on other sites More sharing options...
Colin Lindsay Posted June 6, 2023 Report Share Posted June 6, 2023 13 minutes ago, Peter Truman said: Driving across the York Moors on a foggy misty night the car always ran great So how come in the movies they always break down on a dark foggy night miles from anywhere? 2 Link to comment Share on other sites More sharing options...
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